What two numbers multiply to 646 and add up to -55?




Here we answer the question: "What two numbers multiply to 646 and add up to -55?"

The answer to your question is:

-38 and -17


Below we illustrate and prove that -38 and -17 multiply to 646 and add up to -55:

-38 × -17 = 646
-38 + -17 = -55

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x2 - 55x + 646 = 0

If so, the solution to factor the quadratic equation above is:

(x - 38 ) (x - 17)

To summarize, since -38 and -17 multiply to 646 and add up -55, you know that the following is true:

x2 - 55x + 646 = (x - 38 ) (x - 17)


Multiply To One Number and Add Up To Another
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